Is There Any Such Thing As too Much Light In An Indoor Grow?

I don't know, but I don't think you can have too much light. As long as there aren't heat issues, the plant will use all the light it can and the rest just bounces off.

Sent from somewhere over there.
No, not there...over THERE.

 

Wak, what percentage are fem'd or poly hybrids?

 

I believe it would be genetics if it's not an environmental issue.
 
I just ran 2 1000's in a 10 x 7 room (roughly 8x5 footprint) and experienced no issues like light bleaching or hermies, just a bit of heat damage on a stretchy one.

 

Seems to me if you had too much light it would bleach the leaves, you would see this and raise the light. What brand and type are your bulbs and balasts?

Twas Ever Thus!

 

i had the same problem with a 600w in a 2x3..had a fem rainbow jones, kosher, northern light blue, and a reg grape 13 go herm...no heat probs the light was on its own exhaust...now im in a big tent with the light further away and didnt have a single seed this run so it cold be from the light

 

 
First question, have you run the same genetics under the 600's that you ran under the 400's and didn't have issues with?
 
You could have several more 600's and besides the heat, still not come close to equalling full sun. Certainly not with 2-600's. I guess you could, but not realistically, so nobody go slamming.
 
I don't flower indoors anymore. I don't smoke as much and the strain I run is so strong, a spring and fall crop from clones fills my needs nicely. I just have my host plants and clones indoors under T-5 HO's.
 
I've been running the same strain for 5 years now. No idea of the name, it was gifted seeds, but a pure or nearly so Indica. One of the seeds was male, so they weren't from a hermi, but I didn't cross (like an idiot), and the male was wasted. I have been doing a back breeding thing for that last couple of years though.
 
I really think your issue is genetics mainly because once I found out how nice this plant was, I tried for 2 years to get it to hermi with zero luck and I do mean I tried everything that you shouldn't do with light and environmental stress. Hell, I even took a couple of clones 1 month into flower and put them back into 18/6. Not only did they not hermi, they didn't even revert or reveg, but kept right on flowering. The outdoor spring crop shows no stress even well into June. Whatever it is, it's a real *journeyman* of a strain.
 
That's why I'm doing so much to breed it back to original. Getting ready to do the F4 cross as soon as a male shows.
 
That's also why I think you problem is genetics, simply because this one will not hermi no matter what. That, and there seems to be a lot of pollen chuckers as opposed to real breeders around now.
 
Wet

 

One breeder off the top of my head using a lot of land race stock in breeding is Mandala seeds. I've heard lots of good about them from older, long term growers. No experience, since it seems I hit the jackpot with the seeds I was gifted.
 
I'm not big on the idea of femmed seeds, especially with chemicals. That's why I'm going the long way around with Tres. I call it Tres because all the leaves are 3 bladed and have never shown more or less. I've also never seen a pic of anything like it on any seed site.
 
Anyway, my kid grew something that I would have sworn was a female. Squat growth, bushy, tight internodes, the whole bit. Big surprise when we put it outside to flower and balls popped out.  I crossed it with some Tres clones that were also in flower and that started it. Now, I pop seeds from each generation and cross a male back onto a Tres clone. Eventually, I'll get a 90%+ Tres cross and see how they do. A 'clone only' cut is ok, but I'd feel better with some seeds stuck back *just in case*.
 
Kinda weird killing the females and not the males, but I want no stray genetics for another backcross or 2. Then we'll see what's what.
 
Wet

 

Mandala, Mr.Nice and Swami are the only ones I'm really interested in looking through, other than these beauty's I've been sitting on. 

 

Ive done two orders through attitude, once I even had to pick it up from the post office. Aces both times.

 

In answer to the original question, I (personally) do not believe that you could have too much light. If I could afford it I would have a 4" thick glass box/room to grow in with the entire ceiling, walls and floors covered in side to side/back to back 1,000w Hortilux lighting. I run 2K of those lights over my 8'x8' table and its just not enough. I have shade everywhere.
 
There CAN be too much heat, of course, but light? I dont think so.
 
How about going with "regular" seeds for a few runs to rule the fems out? I was never a fan of fems myself. Good luck with this - I dont believe it to be a light issue.
 
j

 

 
not the ones that hermed no just seemed weird i kept getting one or two plants turn everytime with the 600 vs the 400 and now 1000 with light further away...maybe my raidant was too high for some strains i dont know glad im good now..i just got seeds from single seed centre and the steath was real good plus they made it through chicago which is the worst...just sayin if you were gonna order some

 

Run one of your regular females well past the breeders suggested harvest time (12-15 weeks on an 8 week strain), if no male flowers are present after long flowering, use this female to make your own seeds.  Too many feminized seeds are not tested for stabilization and poor selections result from just using chemicals to create feminine seeds without using a stabilized female.
 
Your problems stem from using feminized seeds containing hermaphroditic traits, not from too much lighting. Too much light and heat would cause the upper leaves to canoe upwards.   Grow your own stabilized seeds and don't take a chance with the seed banks choices.
 
PW